Feedback linearization and lattice theoryKotta, Ülle; Tõnso, Maris; Shumsky, Alexey Ye.; Zhirabok, Alexey N.Systems & control letters2013 / p. 248-255 On accessibility conditions for state space nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Mullari, Tanel; Tõnso, Maris; Wyrwas, MałgorzataSystems & control letters2016 / p. 8-13 http://dx.doi.org/10.1016/j.sysconle.2016.09.018 Single-experiment observability decomposition of discrete-time analytic systemsKawano, Yu; Kotta, ÜlleSystems & control letters2016 / p. 193-199 http://dx.doi.org/10.1016/j.sysconle.2016.09.016